Hitchens’ razor

Hitchens’ razor is a law in epistemology (philosophical razor), which states that the burden of proof or onus in a debate lies with the claim-maker, and if he or she does not meet it, the opponent does not need to argue against the unfounded claim.

Journalism

Betteridge’s law of headlines is an adage that states:

“Any headline which ends in a question mark can be answered by the word no.”Ian Betteridge

History

“…a favorite theory of mine—to wit, that no occurrence is sole and solitary, but is merely a repetition of a thing which has happened before, and perhaps often.”

Business

“It is difficult to get a man to understand something, when his salary depends upon his not understanding it!”Upton Sinclair

People

“Great minds talk about ideas, average minds talk about events, and small minds talk about people.”Eleanor Roosevelt

(Disputed: There are many published incidents of this as an anonymous proverb since at least 1948, and as a statement of Eleanor Roosevelt since at least 1992, but without any citation of an original source. It is also often attributed to Admiral Hyman G. Rickover, but though Rickover quoted this, he did not claim to be the author of it.)